摘要
利用溶液热力学理论,研究了(Ti,Fe)AlC体系钢铁基复合材料可能的反应产物的吉布斯自由能变化。热力学实验模型是在FeC熔液中加入钛铁合金(Ti,Fe)和纯铝块,继续加热到1600℃,熔液经过充分混合、反应后随炉冷却到常温。计算结果表明,TiC先于Fe2Ti、Fe3C等相生成,但始终没有Al4C3和TiAl3相产生;体系中TiC的热力学稳定性最高;在凝固过程中,TiC相优先析出,随后可能有Fe2Ti、Fe3C等相析出;铝含量的增加能够促进TiC、Fe2Ti、Fe3C等相的生成。
The variation of Gibbs free energy in steel matrix composite of (Ti,Fe)-Al-C system was studied on the basis of solution thermodynamics theory. The thermodynamics model is established on the fact that pieces of Ti-Fe alloy and pure Al are added into the Fe-C melt and heated up to 1600 ℃, then frozen to room temperature in the furnace after complete mixing and reaction. Calculated results show that the TiC is formed prior to the Fe_2Ti and Fe_3C,but Al_4C_3 and TiAl_3 can not be formated all the time. TiC is characterized by highest thermodynamics stability in this system. In the course of solidification, TiC is prior to be precipitated and it is possible to be followed by Fe_2Ti and Fe_3C. With the increase of C concentration,the possibilities of TiC、Fe_2Ti and Fe_3C formation are increased.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2005年第4期343-347,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金资助项目(50371030)
吉林大学2004年创新基金资助项目(419070200004)
